Preview keeps saving files without permission

[Andrew Brehm]

When I open an image or PDF with Preview and rotate it or modify it, I often find the file changed on disk afterwards. I never selected save and, in fact, when I do actually choose to save it takes much longer to save than these autosaves take.

I googled and tried all the methods proposed, including

defaults write -app 'Preview' ApplePersistence -bool no

but nothing seems to bother Preview, it still ignores my wishes and decides itself whether to save a file or not.

How can I make Preview follow my commands?

 

[Just_Me_D]

Since your question is almost verbatim to the one found via the following link, maybe the remedy shared within will work for you.

https://discussions.apple.com/thread/7356773

 

[Andrew Brehm]

Found that, did that, quoted it in my question. It doesn't work.

Can you try it on your machine and see if Preview accepts your command?